Fix a bug in regex_Iterator where it would report zero-length matches forever. Reported as http://llvm.org/PR33681. Thanks to Karen Arutyunov for the report.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@307171 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-05 16:37:19 +00:00
parent 530ad8eb20
commit e00d350bbd
2 changed files with 19 additions and 1 deletions
--- a/include/regex
+++ b/include/regex
@@ -6142,7 +6142,7 @@ regex_iterator<_BidirectionalIterator, _CharT, _Traits>::operator++()
 {
    __flags_ |= regex_constants::__no_update_pos;
    _BidirectionalIterator __start = __match_[0].second;
-    if (__match_.empty())
+    if (__match_[0].first == __match_[0].second)
    {
        if (__start == __end_)
        {